2/5 + ?/15 = 16/15
giving brainliest to first corrct answer

Answer:

-2

Step-by-step explanation:

3( x+ 2)=2(x+2)​

=>3x+6=2x+4

=>3x-2x=4-6

=>x=-2

-2  is the value of x

Answer:

The answer is

Step-by-step explanation:

3( x+ 2)=2(x+2)

First expand the terms in the bracket

That's

3x + 6 = 2x + 4

Group like terms

Send the constants to the right side of the equation and those with variables to the left side

3x - 2x = 4 - 6

Simplify

We have the final answer as

Hope this helps you

Answer:

12

Step-by-step explanation:

80-56=24

16/8=2

24/2=12

The required probability of for  triangle whose vertices are among the vertices of the pentagon.

Probability is the ratio of number of favorable outcomes to the total number of outcomes.It can not be more than 1.

There are 3 cases happen,they are 4 all are of same color,  3 are one color and one is the other, 2 are one color and 2 are of the other color.

following all cases,

Number of favorable outcomes = 12

Total number of outcomes = 2^10 = 1024

probability that there will be a triangle whose vertices are not among the vertices of the pentagon.

probability = 12/1024  

required probability = 1 - 12/1024 = 253/256

Hence, the required answer is 253/256.

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Answer:

1. use the formula

\((n-2)180\)

\((20 - 2)180\\18 * 180 = 3240\)

2. use the formula

\(360/n\\360/12\\n = 30\)

3. There is only one at 360 degrees

4. there are 6 rotational symmetries and the number of reflectional symmetries would be 6 as you can see:

Answer = −3a − 4b + 5

The allowed time of 9:00 a.m. on Monday and 7:30 p.m. on Thursday for Jackson to play basketball.

The formula for calculating the time when Jackson would be allowed to play basketball is:

Allowed Time = (Sundays - Thursdays) + (8:00 a.m. - 6:00 p.m.)

Therefore, Jackson would be allowed to play basketball at 9:00 a.m. on Monday and at 7:30 p.m. on Thursday. This is because the recreation center is only open on Sundays through Thursdays between the hours of 8:00 a.m. and 6:00 p.m., and Jackson wants to play basketball there.

To calculate the allowed time, we must first subtract the days that the recreation center is closed (Friday and Saturday) from the days that it is open (Sunday through Thursday). Then, we must add the start and end times (8:00 a.m. and 6:00 p.m., respectively). This gives us the allowed time of 9:00 a.m. on Monday and 7:30 p.m. on Thursday for Jackson to play basketball.

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Answer:

238

Step-by-step explanation:

First, you have to figure out the area for each of the boxes, and then you add all of the areas together

RATIONAL ^-^

Step-by-step explanation:

rational I asked my teacher and she said it's rational because it can be turned into a fraction

While there is agreement on the use of focus groups for evaluating brand names, there are differences in the methods proposed for identifying symbolism associated with posting selfies and searching for ideas for new applications.

In comparing my initial post with my classmate's initial post, there are both areas of agreement and disagreement regarding the research methods suggested for different scenarios.

Agreement:

Both my initial post and my classmate's post agree on the use of focus groups for evaluating potential brand names for a new app. Focus groups allow for gathering opinions and insights from individuals in a controlled environment, as my classmate mentioned. I also referenced Babin (2019) to support this method.

Disagreement:

In terms of identifying the symbolism associated with posting selfies online, I suggested using detailed interviews, while my classmate proposed depth interviews.

While both methods aim to uncover deeper motivations and intentions, my classmate specifically highlighted the need for probing and asking a series of questions. Both approaches can provide valuable insights, but the emphasis on depth interviews suggests a more targeted and focused approach.

For searching for ideas for new smartphone or tablet applications, I suggested conducting detailed interviews with target customer groups, while my classmate proposed creating an attribute list.

While my suggestion focuses on gathering specific customer preferences and needs through direct interaction, my classmate's suggestion of attribute listing involves breaking down existing products and recombining their attributes to generate new ideas. These are two different approaches to idea generation, and the choice depends on the specific context and objectives of the research.

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Answer:

1

Step-by-step explanation:

If the plane goes 250 per HOUR, then it will take that one hour to get to 250

Answer:

log(15)-log(7)

Step-by-step explanation:

just trust me cuh

Answer:

1/36

Step-by-step explanation:

Attached is a chart showing the 36 possible outcomes for rolling 2 number cubes.  The sum of the two cubes is 12 in only one of the outcomes (both sixes).  The probability is 1/36.

Answer:

d-250x5=i dont know

Step-by-step explanation:

From the following four observations among the given hypothesis with significance level is 0.05 the null hypothesis is not true.

Null  hypothesis is all means are equal and in alternative at least there is a difference in one mean.

As given in the question,

Significant level is equal to 0.05

a. Null hypothesis : Null hypothesis is the one where there is no significant difference between the means of all the treatment groups.

Where as alternative hypothesis is the one which represents that there is significant difference between the means of all the treatment groups.

Therefore, from the following four observations among the given hypothesis with significance level is 0.05 the null hypothesis is not true.

Null  hypothesis is all means are equal and in alternative at least there is a difference in one mean.

The complete question is:

The following is sample information. Test the hypothesis that the treatment means are equal. Use the .05 significance level.

Treatment 1:     8,    6,    10,    9

Treatment 2:    3,    2,     4,     3

Treatment 3:     3,    4,     5,    4

a. State the null and alternative hypothesis

b. What is the decision rule?

c. Compute the SST,SSE and SS total

d. Compute an ANOVA table

e. State decision regarding null hypothesis

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Answer:

20 ft

Step-by-step explanation:

It is 20 ft because you use pathagoren therom.

a^2 + b^2 = c^2

Answer:

The question cut off but I'm assuming this is basically just a find the area of the shaded region type of question. First thing you need to do is calculate the areas of the right triangle and the rectangle. Subtract the area of the triangle from the area of the rectangle.

Area of rectangle: 8 x 7 = 56ft^2

Area of the triangle: (6 x 2)/2 = 6ft^2

Subtract 6ft^2 from 56ft^2 and you get:

56 - 6 = 50ft^2

Area of shaded region is 50ft^2

The correlation coefficient of 0.88 reveals that there is an intense linear connection between the two variables.

It should be noted that to ascertain the correlation coefficient, we can utilize the formula:

r = (nΣxy - ΣxΣy) / sqrt[(nΣx^2 - (Σx)^2)(nΣy^2 - (Σy)^2)]

Retaining the same numeric values from before, we can compute:

r = (9(976) - (36)(605)) / sqrt[(9(182) - (36)^2)(9(11681) - (605)^2)] ≈ 0.88

Therefore, the correlation coefficient is fairly close to 0.88.

The correlation coefficient implies a strong positive relationship between hours expended studying and test outcomes. As the quantity of hours committed to studying increases, the test scores will tend to keep up accordingly. A correlation coefficient of 0.88 reveals that there is an intense linear connection between the two variables, and the line of best fit serves as a desirable standard representation of the data.

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Answer:

Step-by-step explanation:

It appears there is an error in the table. The correct table is:

\(\begin{array}{|l|c|c|c|c|c|c|c|c|c|c|c|}\cline{1-11}\vphantom{\dfrac12}\textsf{Hours spent studying $(x)$}&0&1&2&4&4&4&6&6&7&8\\\cline{1-11}\vphantom{\dfrac12}\textsf{Test score $(y)$}&35&40&46&65&67&70&82&88&82&95\\\cline{1-11}\end{array}\)

The simplest method to find the linear regression equation and the correlation coefficient for this data set is to use a statistical calculator.

After entering the data into a statistical calculator we get:

The regression line of y on x is y = a + bx.

Therefore, substitute the found values of a and b into the formula to write the linear regression equation for the given data set:

\(\boxed{y=34.27+7.79x}\)

The correlation coefficient is the value of r, so r = 0.98 to the nearest hundredth.

The correlation coefficient, r, measures the strength of the linear correlation between two variables. |t is always between +1 and -1.

As r = 0.98, there is a very strong positive correlation.

In context, this suggests that the more hours of studying for a test a student does, the higher their test score.

To be certain to get one sock of each color, we need to pull at least the maximum number of socks of any single color.

In this case, there are 10 black socks, so we need to pull at least 10 socks to be certain to get one of each color.

Therefore, the minimum number of socks that must be pulled at random to be certain to get one of each color is 10.

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19 socks must be pulled at random to guarantee obtaining one sock of each color. To be certain to get one of each color, we need to consider the worst-case scenario. Let's assume we first pull out all the red socks. In this case, we would still need to pull out the remaining blue and black socks.

Since there are 8 blue socks and 10 black socks, the maximum number of socks we would need to pull out to guarantee having one of each color is 8 + 10 + 1 = 19.

To understand why we add 1 at the end, let's break it down:
- We pull out 8 blue socks, and at this point, we have 6 red and 2 black socks left.
- Next, we pull out the remaining 6 red socks, and we have 2 black socks remaining.
- Finally, we pull out the remaining 2 black socks, and now we have one of each color.

Therefore, we can conclude that we need to pull out a total of 19 socks to be certain of getting one sock of each color.

In conclusion, 19 socks must be pulled at random to guarantee obtaining one sock of each color.

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Answer:

y = 2/3x-6

Step-by-step explanation:

up 2, right 3

Answer: 140

Step-by-step explanation:

Answer: 50

Step-by-step explanation:

Khan academy answer

The third pattern because you can divide 12 by the number of shapes in the sequence and start counting from the remainder.

In this case choice C has 5 shapes. 12/5 is 2, with a remainder of 2.

The second term in choice C is Circle, so choice C is the answer.

Of course, you can also list them all out.

If there is no remainder when you divide then the 12th term is the last term in the sequence.

Answer:

yes

Step-by-step explanation:

Answer:

Slope = -2/5 new points (5/2,1) and (5,0)

Step-by-step explanation:

Standard point slope equation:

y = mx + b   where m is the slope and b is the y-intercept.

First find the slope between the given points.

Slope = rise/run

m = (y1 - y2) / (x1 - x2)

   = (4 - 0)/(-5 - 5)

   = 4/-10 = -2/5 then

y = (-2/5)x + b then one point (I picked (-5,4) to find b

4 = (-2/5)(-5) + b

4 = 2 + b

b = 2

y = (-2/5)x + 2 then pick an x and find y for additional points.

x = 5/2

y = (-2/5)(5/2) + 2

y = -1 + 2

y = 1 so the point is (5/2,1) and let x = 5

y = (-2/5)(5) + 2

y = -2 + 2

y = 0 so the point is (5,0)

Suppose that :

A = ( 5 , 0 )

B = ( - 5 , 4 )

Then we have :

Slope = [ y(B) - y(A) ] ÷ [ x(B) - x(A) ]

Slope = [ 4 - 0 ] ÷ [ -5 - 5 ]

Slope = 4 ÷ ( - 10 )

Slope = - 4/10

Slope = - 2/5

________________________________

It's time to find the formula of this linear function using following formula :

y - y ( A or B ) = Slope × ( x - x ( A or B ) )

I'm gonna using point A but u can do it with point B which will gave the same answer :

y - 0 = - 2/5 × ( x - 5 )

y = - 2/5 x + 2

_______________________________

We have the formula of the function now thus it's time to find two more points that line passe through ;

To do that we just have to put two desired values of x instead of it and find the y to have the coordinate of those points that line passes through :

I'm gonna use x = - 10 and x = 15 :

x = - 10 x = 15

y = - 2/5 × ( -10 ) + 2 y = -2/5 × ( 15 ) + 2

y = 4 + 2 y = - 6 + 2

y = 6 y = - 4

________________________________

Thus ( -10 , 6 ) & ( 15 , - 4 ) are two other points that line passes through.

Answer:

7 friends

Step-by-step explanation:

We can start by finding the percentage of Alonzo's current friends who chose the Costume Party theme:

Costume Party percentage = (5/30) x 100% = 16.67%

We can then use this percentage to predict how many of the additional 40 friends will choose the Costume Party theme:

Number of new friends who choose Costume Party = (16.67/100) x 40 = 6.67

Since we cannot have a fraction of a person, we can round up to predict that 7 of the additional 40 friends will choose the Costume Party theme.

Therefore, we predict that 7 friends of the additional 40 friends will choose the Costume Party theme.

Answer:

Step-by-step explanation:

assuming that he has an annual interest of 5% then his initial deposit would be rounded to $2,238.65

The limit exists and the exact answer is 0.

To evaluate the limit or determine that it does not exist, we need to find the value of the function as (x,y) approaches (0,0).

lim ( x , y ) → ( 0 , 0 ) ( x + y + 3 ) e ^ (− 1 / ( x ^ 2 + y ^ 2 ))

First, we can simplify the expression by substituting (0,0) for (x,y):

lim ( 0 , 0 ) → ( 0 , 0 ) ( 0 + 0 + 3 ) e ^ (− 1 / ( 0 ^ 2 + 0 ^ 2 ))

This simplifies to:

lim ( 0 , 0 ) → ( 0 , 0 ) ( 3 ) e ^ (− 1 / 0 )

As the denominator in the exponent approaches 0, the value of the exponent approaches negative infinity. This means that the value of e to the negative infinity approaches 0:

lim ( 0 , 0 ) → ( 0 , 0 ) ( 3 ) ( 0 )

The limit of this expression is 0, so the limit of the original expression is also 0:

lim ( x , y ) → ( 0 , 0 ) ( x + y + 3 ) e ^ (− 1 / ( x ^ 2 + y ^ 2 )) = 0

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If the expression is \(log_{2}\sqrt{x}\) then the expansion of the expression looks like (\(log_{2}x\))/2

Given that the expression is \(log_{2}\sqrt{x}\).

We are required to find the expanded form of the expression.

The power property says that if an exponent is being raised to another exponent, we can multiply the exponents. It says that

log\(a^{b}\)=b log a.

The expression is \(log_{2}\sqrt{x}\).

\(log_{2}\sqrt{x}\)=\(log_{2}x^{1/2} }\)    

(We have to just put the power of x in front of the log to expand)

=(\(log_{2}\) x)/2

Hence if the expression is \(log_{2}\sqrt{x}\), then the expansion of the expression looks like (\(log_{2}\) x)/2.

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The approximate noon Sun angle at 41°N latitude (on Long Island) on February 14th is 61°. None of the provided answer choices match the correct answer.

To calculate the approximate noon Sun angle at 41°N latitude (on Long Island) on February 14th, we can use the analemma.

The analemma is a figure-8 shaped curve that represents the position of the Sun in the sky at the same time each day over the course of a year. It accounts for the Earth's axial tilt and elliptical orbit around the Sun.

To find the approximate noon Sun angle, we need to consider the declination of the Sun on February 14th and the latitude of Long Island.

On February 14th, the Sun's declination is approximately -12°.

The Sun angle at noon can be calculated using the following formula:

Sun angle = 90° - (latitude - declination)

Substituting the values, we have:

Sun angle = 90° - (41° - (-12°))

Simplifying this equation, we get:

Sun angle = 90° - 41° + 12°

Sun angle = 61°

Therefore, the approximate noon Sun angle at 41°N latitude (on Long Island) on February 14th is 61°.

None of the provided answer choices match the correct answer.

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Applying Green's Theorem, the line integral can be evaluated as the double integral over the region enclosed by the curve. By calculating the double integral, we find the value of the line integral to be 6e^3 - 6.

The line integral along the given curve can be expressed as:

∮C ye^x dx + 2e^x dy

We apply Green's Theorem, which states that for a vector field F = (M, N):

∮C M dx + N dy = ∬R (dN/dx - dM/dy) dA

First, let's calculate the partial derivatives of the given functions:

∂/∂x (2e^x) = 2e^x

∂/∂y (ye^x) = e^x

Now, we substitute these derivatives into Green's Theorem:

∮C ye^x dx + 2e^x dy = ∬R (e^x - 2e^x) dA

The region R is defined by the vertices of the rectangle (0, 0), (3, 0), (3, 4), and (0, 4).

To evaluate the double integral, we integrate with respect to x and y over the region R:

∬R (e^x - 2e^x) dA = ∫[0,3] ∫[0,4] (e^x - 2e^x) dy dx

Integrating with respect to y first, we get:

∫[0,3] [(e^x - 2e^x)y] [0,4] dx

Simplifying, we have:

∫[0,3] (4e^x - 8e^x) dx

Combining like terms, we obtain:

∫[0,3] (-4e^x) dx

Integrating, we have:

[-4e^x] [0,3] = -4e^3 + 4

Thus, the value of the line integral along the given curve is 6e^3 - 6.

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Answer:

Micah is incorrect, 50% of hs students could drive and 50% of college students could drive.

Step-by-step explanation: